from
The Collaborative International Dictionary of English v.0.48
Congressional \Con*gres"sion*al\, a.
Of or pertaining to a congress, especially, to the Congress
of the United States; as, congressional debates.
[1913 Webster]
Congressional and official labor. --E. Everett.
[1913 Webster]
{Congressional District}, one of the divisions into which a
State is periodically divided (according to population),
each of which is entitled to elect a Representative to the
Congress of the United States.
[1913 Webster]